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ERROR DETECTION/
CORRECTION CIRCUIT
SY10E193
SY100E193
FEATURES
■ Hamming code generation
■ Extended 100E V
EE range of –4.2V to –5.5V
■ 8-bit wide
■ Expandable for more width
■ Provides parity register
■ Fully compatible with industry standard 10KH,
100K ECL levels
■ Internal75KΩ input pulldown resistors
■ Fully compatible with Motorola MC10E/100E193
■ Available in 28-pin PLCC package
PIN CONFIGURATION
CCO
V
CLK
CCO
V
1
P
PGEN
18
17
16
15
14
13
12
2
P
PARERR
PARERR
V
CC
P
5
V
CCO
P
4
P
3
EV/OD
BPAR
B
V
EE
B
B
B
S-IN
EN
25 24 23 22 21 20 19
26
27
28
0
1
2
1
3
2
4
3
5 6 7 8 9 10 11
4
B
SHIFT
HOLD
TOP VIEW
PLCC
J28-1
5
6B7
B
B
DESCRIPTION
The SY10/100E193 are error detection and correction
(EDAC) circuits designed for use in new, high- performance
ECL systems. The E193 generates hamming parity codes
on an 8-bit word as shown in the block diagram. The P
output gives the parity of the whole word. PGEN provides
word parity after Odd/Even parity control and gating with
the BPAR input. PGEN also feeds into a 1-bit shiftable
register for use as part of a scan ring.
The combinatorial part of the device generates the same
code pattern as the Motorola MC10193.
Used in conjunction with 12-bit parity generators, such
as the E160, a SECDED (single error correction, double
error detection) error system can be designed for a multiple
of an 8-bit word.
PIN NAMES
Pin Function
B0–B7 Check Bit Inputs
BPAR Check Bit Parity Input
EV/OD Even/Odd Parity Select
EN Parity Enable
HOLD Syndrome Hold Input
S-IN Syndrome Bit Input
SHIFT Syndrome Bit Shift
CLK Clock Input
P1–P5 Parity Output
PGEN Parity Generate Output
PARERR/PARERR Parity Error Output
CCO VCC to Output
V
5
Rev.: C Amendment: /1
1
Issue Date: February, 1998
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Micrel
BLOCK DIAGRAM
B INPUTS
3
6574210
SY10E193
SY100E193
BPAR
EV/OD
B2, B3, B6, B7
B1, B3, B5, B7
B4, B5, B6, B7
B1, B2, B4, B7
BYTE (B0 – B7)
0
0
D
P
2
P
1
P
3
P
4
P
5
PGEN
PARERR
EN
HOLD
S-IN
SHIFT
CLK
1
1
PARERR
2
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Micrel
SY100E193
DC ELECTRICAL CHARACTERISTICS
VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND
TA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
IIH Input HIGH Current ——150 ——150 ——150 µA —
EE Power Supply Current mA —
I
10E — 112 134 — 112 134 — 112 134
100E — 112 134 — 112 134 — 129 155
AC ELECTRICAL CHARACTERISTICS
VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND
TA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
PLH Propagation Delay to Output ps —
t
tPHL B to P1, P2, P3, P4 350 700 1000 350 700 1000 350 700 1000
B to P5 400 775 1150 400 775 1150 400 775 1150
EV/OD, BPAR to PGEN 350 650 850 350 650 850 350 650 850
B to PGEN 600 1000 1450 600 1000 1450 600 1000 1450
CLK to PARERR 300 550 850 300 550 850 300 550 850
S Set-up Time ps —
t
SHIFT 400 150 — 400 150 — 400 150 —
S-IN 300 50 — 300 50 — 300 50 —
HOLD 750 350 — 750 350 — 750 350 —
EN 500 250 — 500 250 — 500 250 —
EV/OD 1300 850 — 1300 850 — 1300 850 —
BPAR 1300 850 — 1300 850 — 1300 850 —
B 1700 1100 — 1700 1100 — 1700 1100 —
H Hold Time ps —
t
SHIFT 200 –150 — 200 –150 — 200 –150 —
S-IN 300 –50 — 300 –50 — 300 –50 —
HOLD 100 –350 — 100 –350 — 100 –350 —
EN 100 –250 — 100 –250 — 100 –250 —
EV/OD –200 –850 —–200 –850 —–200 –850 —
BPAR –200 –850 —–200 –850 —–200 –850 —
B –300 –1100 —–300 –1100 —–300 –1100 —
t
r Rise/Fall Time 300 700 1100 300 700 1100 300 700 1100 ps —
tf 20% to 80%
SY10E193
PRODUCT ORDERING CODE
Ordering Package Operating
Code Type Range
SY10E193JC J28-1 Commercial
SY10E193JCTR J28-1 Commercial
SY100E193JC J28-1 Commercial
SY100E193JCTR J28-1 Commercial
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Micrel
28 LEAD PLCC (J28-1)
SY10E193
SY100E193
Rev. 03
MICREL-SYNERGY 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA
TEL + 1 (408) 980-9191 FAX + 1 (408) 914-7878 WEB http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
© 2000 Micrel Incorporated
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